St Charles CUSD 303 School Calendar 2025-2026
St Charles CUSD 303 is a public school district in Illinois serving 11,801 students. This page covers the 2025-2026 school year with day-level calendar data.
This district is part of the Chicago-Naperville-Elgin, IL-IN metropolitan area.
11,801
Enrollment
163
School Days
53
Break Days
2025-2026
School Year
Calendar Summary
First Day of School
August 8, 2025
Last Day of School
May 22, 2026
NCES District ID
1737170
State
Illinois
Breaks & Holidays
Scheduled breaks and holidays for St Charles CUSD 303 during 2025-2026 (excludes weekends and summer):
| Break | Start | End | Days |
|---|---|---|---|
| Professional Learning/Teacher Prep Days | Aug 1 | Aug 7 | 5 |
| Institute Day (No Students) | Aug 11 | Aug 12 | 2 |
| Institute Day (No Students) | Aug 29 | Aug 29 | 1 |
| Labor Day Holiday | Sep 1 | Sep 1 | 1 |
| Student Holiday (Professional Learning) | Sep 17 | Sep 17 | 1 |
| PreK-12 Parent/Teacher Conferences (No Students) | Oct 9 | Oct 9 | 1 |
| PreK-8 Parent/Teacher Conferences & High School Teachers' In-Service (No Students) | Oct 10 | Oct 10 | 1 |
| Columbus Day Holiday | Oct 13 | Oct 13 | 1 |
| Weather Make-Up Days/Fall Break Holiday | Oct 14 | Oct 14 | 1 |
| Student Holiday (Professional Learning) | Nov 12 | Nov 12 | 1 |
| Non Attendance Days (Offices Open) | Nov 24 | Nov 26 | 3 |
| Thanksgiving Break | Nov 27 | Nov 28 | 2 |
| Winter Break | Dec 22 | Dec 31 | 10 |
| Winter Break (continues) | Jan 1 | Jan 2 | 2 |
| K-12 Teacher Work Day, PreK Institute Day (No students) | Jan 5 | Jan 5 | 1 |
| Martin Luther King, Jr Holiday | Jan 19 | Jan 19 | 1 |
| Presidents' Day Holiday | Feb 16 | Feb 16 | 1 |
| School Improvement Day (No Students) | Feb 17 | Feb 17 | 1 |
| Winter Break | Feb 18 | Feb 20 | 3 |
| K-12 Institute Day, PreK Work Day (No Students) | Feb 27 | Feb 27 | 1 |
| Student Holiday (Professional Learning) | Mar 11 | Mar 11 | 1 |
| Spring Break | Mar 30 | Mar 31 | 2 |
| Spring Break (continues) | Apr 1 | Apr 3 | 3 |
| Spring Break | Apr 4 | Apr 8 | 5 |
| School Improvement (No Students) | Apr 17 | Apr 17 | 1 |
| Memorial Day Holiday | May 25 | May 25 | 1 |
School Year Calendar
Visual calendar for St Charles CUSD 303, July 2025 through June 2026:
Jul 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
Aug 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Sep 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 |
Oct 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 27 | 28 | 29 | 30 | 31 |
Nov 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | |||||
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 24 | 25 | 26 | 27 | 28 | 29 | 30 |
Dec 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 | 31 |
Jan 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |||
| 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 29 | 30 | 31 |
Feb 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 |
Mar 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 30 | 31 |
Apr 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 27 | 28 | 29 | 30 |
May 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Jun 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 |
In SessionBreak/HolidayWeekend
Multi-Year Comparison
Calendar data across school years for St Charles CUSD 303:
| School Year | First Day | Last Day | School Days | Break Days |
|---|---|---|---|---|
| 2024-2025 | Aug 21 | May 22 | 197 | 0 |
| 2025-2026 | Aug 8 | May 22 | 163 | 53 |
| 2026-2027 | Aug 19 | May 27 | 202 | 0 |
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